GHSA-j3w3-p6mr-3hrh — dyn-future
GHSA-j3w3-p6mr-3hrh is a security vulnerability in dyn-future. No vendor fix is recorded yet; mitigation options are listed below.
DynFuture Drop Can Construct a Dangling Reference
Real-World Exposure
dyn-futureReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects crates.io packages — download data is not available via public APIs for these ecosystems.
Description
DynFuture is unsound because its Drop implementation transmutes a trait-object reference into unrelated reference types, which constructs an invalid reference from trait object metadata.
This issue was reproduced against dyn-future 3.0.4 under Miri. The crate is unmaintained.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🦀crates.io | dyn-future | all versions | No fix |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for dyn-future, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Remediation status
No patched version of dyn-future has shipped for GHSA-j3w3-p6mr-3hrh yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.
Mitigate without a patch
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-j3w3-p6mr-3hrh can be triaged on real exposure rather than presence alone.
Tailored to GHSA-j3w3-p6mr-3hrh. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-j3w3-p6mr-3hrh in your dependencies?
O3 Security finds GHSA-j3w3-p6mr-3hrh across crates.io dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.